The SEC requires financials to be released no more than 45 days after the end of the reporting period. Also literally nobody owns the stock, and the only real shareholders are the JETS index and the insider hedge funds that already know the detailed financials.

Its not like they have to worry about how the market is going to react because FLYY is literally a penny stock at this point with a market cap of $98M. If the hedge funds tried selling any of their stock it would go to 0, which is why the only thing they can do is start the process of selling off parts of the airline to get cash and then use the cash to pay off their "senior secured notes" and not use for running the airline, which they have no interest in doing.